99816013602 has 54 divisors (see below), whose sum is σ = 218530451217. Its totient is φ = 32927520192.

The previous prime is 99816013541. The next prime is 99816013603. The reversal of 99816013602 is 20631061899.

It is a happy number.

99816013602 is a `hidden beast` number, since 9 + 9 + 8 + 1 + 601 + 36 + 0 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 63040664241 + 36775349361 = 251079^2 + 191769^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=223401.

It is not an unprimeable number, because it can be changed into a prime (99816013603) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 151465549 + ... + 151466207.

Almost surely, 2^99816013602 is an apocalyptic number.

99816013602 is an abundant number, since it is smaller than the sum of its proper divisors (118714437615).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99816013602 is an equidigital number, since it uses as much as digits as its factorization.

99816013602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1552 (or 777 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The spelling of 99816013602 in words is "ninety-nine billion, eight hundred sixteen million, thirteen thousand, six hundred two".